In " The Crossing " (Criminal Minds Season 3, Episode 18), the BAU team handles a dangerous stalking case in Maryland while Hotch and Rossi consult on a domestic abuse case in Boston. The episode is notable for JJ's emotional reaction to the stalker case and the revelation that she is pregnant. You can watch this episode, which features a split focus on the team, on streaming platforms like Paramount+ . Criminal Minds Season 3 Episode 18: The Crossing summary